// Internal header for TR1 complex -*- C++ -*- // Copyright (C) 2006 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. /** @file tr1/common.h * This is a TR1 C++ Library header. */ #ifndef _TR1_COMMON_H #define _TR1_COMMON_H 1 #include // namespace std::tr1 namespace std { _GLIBCXX_BEGIN_NAMESPACE(tr1) template::value> struct __promote { typedef double __type; }; template struct __promote<_Tp, false> { typedef _Tp __type; }; template struct __promote_2 { private: typedef typename __promote<_Tp>::__type __type1; typedef typename __promote<_Up>::__type __type2; public: typedef __typeof__(__type1() + __type2()) __type; }; template struct __promote_3 { private: typedef typename __promote<_Tp>::__type __type1; typedef typename __promote<_Up>::__type __type2; typedef typename __promote<_Vp>::__type __type3; public: typedef __typeof__(__type1() + __type2() + __type3()) __type; }; _GLIBCXX_END_NAMESPACE } // namespace std #endif